Josef Frank (15 July 1885 – 8 January 1967) was an Austrian-born architect, artist, and designer who adopted Swedish citizenship in the latter half of his life.

His parents, merchant Ignaz (Isak) Frank (1851–1921, Vienna) and the Vienna-born Jenny (1861–1941), were originally from Heves in Hungary.

The Vienna Circle manifesto lists three of his publications[2][3][4] in a bibliography of closely related authors.

Contrary to most other architects of the interwar period in Vienna, he took the idea of settlement and not the creation of so-called super blocks in the municipal housing.

In addition to his architectural work he created numerous designs for furniture, furnishings, fabrics, wallpaper and carpet.